1
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O’Halloran CP, Fox J, Popescu A, Cornicelli M, Tannous P, Hauck A. Late Diagnosis of Residual Major Aortopulmonary Collateral in a Patient with Tetralogy of Fallot. CASE (Phila) 2024; 8:91-96. [PMID: 38524977 PMCID: PMC10954567 DOI: 10.1016/j.case.2023.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
•Residual MAPCAs result in post-tricuspid shunt and PH. •Distinction between PH and conduit stenosis requires attention to TTE findings. •Management of complex adult CHD should be reserved for centers with expertise. •A multimodal imaging approach is often required to complete this understanding.
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Affiliation(s)
- Conor P. O’Halloran
- Division of Cardiology, Department of Pediatrics, Ann and Robert H. Lurie Children’s Hospital of Chicago, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Jeremy Fox
- Division of Cardiology, Department of Pediatrics, Ann and Robert H. Lurie Children’s Hospital of Chicago, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Andrada Popescu
- Department of Radiology, Ann and Robert H. Lurie Children’s Hospital of Chicago, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Matthew Cornicelli
- Division of Cardiology, Department of Pediatrics, Ann and Robert H. Lurie Children’s Hospital of Chicago, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Paul Tannous
- Division of Cardiology, Department of Pediatrics, Ann and Robert H. Lurie Children’s Hospital of Chicago, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Amanda Hauck
- Division of Cardiology, Department of Pediatrics, Ann and Robert H. Lurie Children’s Hospital of Chicago, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
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2
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Jiang F, Henry KR, Bhusal B, Sanpitak P, Webster G, Popescu A, Laternser C, Kim D, Golestanirad L. Age Matters: A Comparative Study of RF Heating of Epicardial and Endocardial Electronic Devices in Pediatric and Adult Phantoms during Cardiothoracic MRI. Diagnostics (Basel) 2023; 13:2847. [PMID: 37685385 PMCID: PMC10486594 DOI: 10.3390/diagnostics13172847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 06/29/2023] [Accepted: 08/04/2023] [Indexed: 09/10/2023] Open
Abstract
This study focused on the potential risks of radiofrequency-induced heating of cardiac implantable electronic devices (CIEDs) in children and adults with epicardial and endocardial leads of varying lengths during cardiothoracic MRI scans. Infants and young children are the primary recipients of epicardial CIEDs, though the devices have not been approved as MR conditional by the FDA due to limited data, leading to pediatric hospitals either refusing the MRI service to most pediatric CIED patients or adopting a scan-all strategy based on results from adult studies. The study argues that risk-benefit decisions should be made on an individual basis. We used 120 clinically relevant epicardial and endocardial device configurations in adult and pediatric anthropomorphic phantoms to determine the temperature rise during RF exposure at 1.5 T. The results showed that there was significantly higher RF heating of epicardial leads than endocardial leads in the pediatric phantom, but not in the adult phantom. Additionally, body size and lead length significantly affected RF heating, with RF heating up to 12 °C observed in models based on younger children with short epicardial leads. The study provides evidence-based knowledge on RF-induced heating of CIEDs and highlights the importance of making individual risk-benefit decisions when assessing the potential risks of MRI scans in pediatric CIED patients.
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Affiliation(s)
- Fuchang Jiang
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Kaylee R. Henry
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Bhumi Bhusal
- Department of Radiology, Northwestern University, Chicago, IL 60611, USA
| | - Pia Sanpitak
- Department of Radiology, Northwestern University, Chicago, IL 60611, USA
| | - Gregory Webster
- Division of Cardiology, Ann and Robert H. Lurie Children’s Hospital of Chicago, Northwestern University, Chicago, IL 60611, USA
| | - Andrada Popescu
- Division of Medical Imaging, Ann and Robert H. Lurie Children’s Hospital of Chicago, Northwestern University, Chicago, IL 60611, USA
| | - Christina Laternser
- Division of Cardiology, Ann and Robert H. Lurie Children’s Hospital of Chicago, Northwestern University, Chicago, IL 60611, USA
| | - Daniel Kim
- Department of Radiology, Northwestern University, Chicago, IL 60611, USA
| | - Laleh Golestanirad
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
- Department of Radiology, Northwestern University, Chicago, IL 60611, USA
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Jiang F, Bhusal B, Sanpitak P, Webster G, Popescu A, Kim D, Bonmassar G, Golestanirad L. A comparative study of MRI-induced RF heating in pediatric and adult populations with epicardial and endocardial implantable electronic devices. Annu Int Conf IEEE Eng Med Biol Soc 2022; 2022:4014-4017. [PMID: 36086095 PMCID: PMC10848149 DOI: 10.1109/embc48229.2022.9871087] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Patients with congenital heart defects, inherited arrhythmia syndromes, and congenital disorders of cardiac conduction often receive a cardiac implantable electronic device (CIED). At least 75% of patients with CIEDs will need magnetic resonance imaging (MRI) during their lifetime. In 2011, the US Food and Drug Administration approved the first MR-conditional CIEDs for patients with endocardial systems, in which leads are passed through the vein and affixed to the endocardium. The majority of children, however, receive an epicardial CIED, where leads are directly sewn to the epicardium. Unfortunately, an epicardial CIED is a relative contraindication to MRI due to the unknown risk of RF heating. In this work, we performed anthropomorphic phantom experiments to investigate differences in RF heating between endocardial and epicardial leads in both pediatric and adult-sized phantoms, where adult endocardial CIED was the control. Clinical Relevance-This work provides a quantitative comparison of MRI RF heating of epicardial and endocardial leads in pediatric and adult populations.
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4
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Popescu A, Soric G, Lupascu-Volentir F, Negara A. Malnutrition assessment correlated to frailty syndrome in the elderly. Clin Nutr ESPEN 2021. [DOI: 10.1016/j.clnesp.2021.09.608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Costache RS, Dragomirică AS, Dumitraș EA, Mariana J, Căruntu A, Popescu A, Costache DO. Portal vein thrombosis: A concise review (Review). Exp Ther Med 2021; 22:759. [PMID: 34035856 DOI: 10.3892/etm.2021.10191] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 02/19/2021] [Indexed: 12/14/2022] Open
Abstract
Portal vein thrombosis (PVT) is a frequent complication in cirrhotic patients, but it may also exist as a basic vascular condition even without any liver damage. Local and systemic factors play a significant role in the pathogenesis of PVT; yet, in practice, more than one factor may be identified. PVT can be considered a result of liver fibrosis and hepatic insufficiency. The JAK2 mutation has been accepted as a factor producing PVT. In general, the anticoagulants are recommended but this therapy should be used carefully in treating patients that associate coagulopathy or thrombocytopenia and esophageal varices. Acute PVT without bowel infarction has a good prognosis. In liver cirrhosis, the mortality due to hemorrhage is higher than in chronic PVT. Therefore, for the patients with PVT, the survival rate is decreased by 55% in two years, due to hepatic insufficiency. Regarding the treatment, LMWH (low molecular weight heparine) is the most utilized in patients with cirrhosis, non-malignancies, infections, or those who are awaiting a liver transplant. DOACs (direct-acting oral anticoagulants) may be used in the rest of the medical conditions, being safe and equal to LMWH.
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Affiliation(s)
- Raluca S Costache
- Department of Gastroenterology, 'Carol Davila' University Central Emergency Military Hospital, 010825 Bucharest, Romania.,5th Clinical Department, Gastroenterology and Internal Medicine Discipline, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Andreea S Dragomirică
- Department of Gastroenterology, 'Carol Davila' University Central Emergency Military Hospital, 010825 Bucharest, Romania
| | - Elena A Dumitraș
- Department of Gastroenterology, 'Carol Davila' University Central Emergency Military Hospital, 010825 Bucharest, Romania
| | - Jinga Mariana
- Department of Gastroenterology, 'Carol Davila' University Central Emergency Military Hospital, 010825 Bucharest, Romania.,5th Clinical Department, Gastroenterology and Internal Medicine Discipline, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Ana Căruntu
- Department of Maxillofacial Surgery, 'Carol Davila' University Central Emergency Military Hospital, 010825 Bucharest, Romania
| | - Andrada Popescu
- Department of Gastroenterology, 'Carol Davila' University Central Emergency Military Hospital, 010825 Bucharest, Romania.,5th Clinical Department, Gastroenterology and Internal Medicine Discipline, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Daniel O Costache
- Department of Research, 'Carol Davila' University Central Emergency Military Hospital, 010825 Bucharest, Romania
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Tannous P, Popescu A, Forbess L, Nugent A. Transcatheter biventricular conversion in an adult patient with a 1.5 ventricle Glenn palliation and superior vena cava syndrome. Catheter Cardiovasc Interv 2020; 96:633-637. [PMID: 32343465 DOI: 10.1002/ccd.28920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/31/2020] [Accepted: 04/03/2020] [Indexed: 11/09/2022]
Abstract
Covered stents have a continually expanding spectrum of applications for patients with congenital heart disease. Here we report use of covered stents to successfully perform a first-in-human percutaneous biventricular conversion of a 1.5 ventricle Glenn palliation in an adult born with pulmonary atresia. This case demonstrates that in patients considered borderline for biventricular repair, surgery can potentially be modified to promote growth of underdeveloped structures and setup for transcatheter biventricular conversion.
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Affiliation(s)
- Paul Tannous
- Division of Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois.,Department of Pediatrics, Northwestern University, Chicago, Illinois
| | - Andrada Popescu
- Department of Pediatrics, Northwestern University, Chicago, Illinois.,Division of Pediatric Radiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
| | - Lisa Forbess
- Division of Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois.,Department of Pediatrics, Northwestern University, Chicago, Illinois
| | - Alan Nugent
- Division of Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois.,Department of Pediatrics, Northwestern University, Chicago, Illinois
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Trifu S, Popescu A, Dragoi AM, Trifu AI. THYROID HORMONES AS A THIRD LINE OF AUGMENTATION MEDICATION IN TREATMENT-RESISTANT DEPRESSION. Acta Endocrinol (Buchar) 2020; 16:256-261. [PMID: 33029246 DOI: 10.4183/aeb.2020.256] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Introduction Clinical or subclinical hypothyroidism dictates the severity of depressive episodes and more frequently overlaps psychotic phenomenology. There are also major depressive episodes resistant to treatment in patients with euthyroidism, in which supplementation of antidepressant medication with thyroid hormones is beneficial. Material Systematization of meta-analyses from perspectives: hypothyroidism and depression, autoimmune and depression pathology, gestational and puerperal pathology in association with hormonal and dispositional changes, presentation of therapeutic schemes. Results Hypothyroidism is more commonly comorbid with major depression in women. It associates the need for hospitalizations, psychotic phenomenology, resistance to treatment, somatic comorbidities. Autoimmune pathology is associated with depression and requires thorough investigation. A possible genetic candidate for thyroid dysfunction is the DIO1 gene. FT4 may be a predictor, but the combination of FT4 + TBG measured during the prenatal period has a higher prognostic power for a future depressive episode. Conclusion The article presents psychiatric medication schemes that combine antidepressants and antipsychotics of various classes with other enhancers, an important role going back to step three, which includes thyroid hormones, mainly T3. The doses used are smaller than the amount of endogenous production of T3 daily, with a small risk of inducing clinical hyperthyroidism.
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Affiliation(s)
- S Trifu
- "Carol Davila" University of Medicine and Pharmacy - Neurosciences, Bucharest, Romania
| | - A Popescu
- "Alex. Obregia" Clinical Hospital for Psychiatry - Psychiatry, Bucharest, Romania
| | - A M Dragoi
- "Alex. Obregia" Clinical Hospital for Psychiatry - Psychiatry, Bucharest, Romania
| | - A I Trifu
- Medical Military Institute - General Medicine, Bucharest, Romania
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Adalbert S, Marc L, Timar R, Popescu A, Sirli R, Nistorescu S, Gadalean F, Mihaescu A, Schiller O, Bob F, Grosu I, Velciov S, Sporea I. FP353Liver fibrosis as evaluated by transient elastography is not correlated with CKD development and severity in DM2 patients. Nephrol Dial Transplant 2019. [DOI: 10.1093/ndt/gfz106.fp353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Schiller Adalbert
- Victor Babes University of Medicine and Pharmacy, Timișoara, Romania
| | - L Marc
- Victor Babes University of Medicine and Pharmacy, Timișoara, Romania
| | - R Timar
- Victor Babes University of Medicine and Pharmacy, Timișoara, Romania
| | - A Popescu
- Victor Babes University of Medicine and Pharmacy, Timișoara, Romania
| | - R Sirli
- Victor Babes University of Medicine and Pharmacy, Timișoara, Romania
| | - S Nistorescu
- Victor Babes University of Medicine and Pharmacy, Timișoara, Romania
| | - F Gadalean
- Victor Babes University of Medicine and Pharmacy, Timișoara, Romania
| | - A Mihaescu
- Victor Babes University of Medicine and Pharmacy, Timișoara, Romania
| | - O Schiller
- Avitum Center of Hemodialysis, Timisoara, Romania
| | - F Bob
- Victor Babes University of Medicine and Pharmacy, Timișoara, Romania
| | - I Grosu
- Victor Babes University of Medicine and Pharmacy, Timișoara, Romania
| | - S Velciov
- Victor Babes University of Medicine and Pharmacy, Timișoara, Romania
| | - I Sporea
- Victor Babes University of Medicine and Pharmacy, Timișoara, Romania
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9
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Blaja C, Popescu A. Experimental Research on Endotoxic Shock in Urology. Eur Urol 2019. [DOI: 10.1159/000455593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Abstract
Introduction Ties between the endocrine system and mental health are undeniably a consistent point of interest in modern day medicine. Furthermore, mental disturbances due to hormonal changes following childbirth have been mentioned in medical literature since Hippocrates. Considering the dramatic endocrine, paracrine and autocrine changes that occur during gestation, labour and postnatal phase, hormonal theories are not to be ignored in the treatment of postpartum disorders. Results Reproductive hormones are known to modulate behavioural, emotional and cognitive response, therefore rapid changes in estradiol and progesterone plasma concentrations during pregnancy and labour create a vulnerable terrain leading towards postpartum disorders. New research shows that women suffering from postpartum disorders have abnormal neural responses, suggesting a neuroendocrine explanation for postpartum syndromes. Conclusion To facilitate further research in this area, we present new information on several hormonal interactions and the psychiatric response involved in pregnancy and labour, offering an interdisciplinary outlook on pregnancy and postpartum disorders. There is enough evidence to suggest that estradiol, progesterone, oxytocin, cortisol and thyroid hormones are some of many hormones involved in postpartum syndromes and tackling their perinatal imbalance with pharmacological substituents or antagonists could be useful as an adjuvant form of treatment in future patients.
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Affiliation(s)
- S Trifu
- "Carol Davila" University of Medicine and Pharmacy - Dept. of Neurosciences, Bucharest, Romania
| | - A Vladuti
- University of Bucharest Faculty of Psychology and Educational Sciences - Dept. of Psychology, Bucharest, Romania
| | - A Popescu
- "Alex. Obregia" Clinical Hospital for Psychiatry - Dept. of Psychiatry, Bucharest, Romania
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12
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Sima A, Sporea I, Timar R, Vlad M, Braha A, Popescu A, Nistorescu S, Mare R, Sirli R, Albai A, Albai O, Diaconu L, Sorescu T, Popescu S, Sima L. NON-INVASIVE ASSESSMENT OF LIVER STEATOSIS AND FIBROSIS USING TRANSIENT ELASTOGRAPHY AND CONTROLLED ATTENUATION PARAMETER IN TYPE 2 DIABETES PATIENTS. Acta Endocrinol (Buchar) 2018; 14:394-400. [PMID: 31149289 PMCID: PMC6525774 DOI: 10.4183/aeb.2018.394] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
CONTEXT Nonalcoholic fatty liver disease is common in type 2 diabetes mellitus patients, being difficult to diagnose. OBJECTIVE To find a correlation between elastographic parameters and lab results, for facilitating the diagnosis of nonalcoholic fatty liver disease. DESIGN This is a cross sectional study, conducted at the Departments of Diabetes, Nutrition and Metabolic Diseases, and Gastroenterology and Hepatology, of the Clinical Emergency Hospital "Pius Brinzeu" Timisoara. SUBJECTS AND METHODS We included 190 type 2 diabetes mellitus patients, collected data regarding medical history, clinical and biological features and applied the Alcohol Use Disorders Identification Test. We excluded patients with other causes of liver disease. Liver steatosis and fibrosis were evaluated through transient elastography, yielding two parameters: liver stiffness as an indicator of liver fibrosis stage, expressed in kPa, and liver steatosis stage, assessed by controlled attenuation parameter, expressed in dB/m. Data were analyzed using SPSS 15. RESULTS The analyzed group comprised 113 patients. Elastographic measurements showed that 93.8% of the patients had steatosis (controlled attenuation parameter ≥232.5 dB/m) and 70.8% severe steatosis (controlled attenuation parameter ≥290 dB/m). Severe steatosis was more common in women (75.7%) than in men (68.1%) (p<0.0001). From the patients with steatosis, 47.2% had liver stiffness values suggestive for fibrosis and 19.8% for cirrhosis. Most patients with steatosis and severe fibrosis were obese (66.7%). Triglycerides/HDLc ratio >4 correlated with hepatic steatosis (p=0.04), being more common in patients with severe fibrosis/cirrhosis (58.3%) than in those with absent or mild fibrosis (36.2%). CONCLUSIONS Our study found a clear correlation between type 2 diabetes mellitus and the presence of liver steatosis. It correlates with body mass index, waist circumference (in men) and triglycerides/HDLc ratio. Controlled attenuation parameter is a useful noninvasive method for detection and quantification of liver steatosis.
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Affiliation(s)
- A. Sima
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Diabetes and Metabolic Diseases, Timisoara, Romania
| | - I. Sporea
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Gastroenterology and Hepatology, Timisoara, Romania
| | - R. Timar
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Gastroenterology and Hepatology, Timisoara, Romania
| | - M. Vlad
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Endocrinology, Timisoara, Romania
| | - A. Braha
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Endocrinology, Timisoara, Romania
| | - A. Popescu
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Gastroenterology and Hepatology, Timisoara, Romania
| | - S. Nistorescu
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Gastroenterology and Hepatology, Timisoara, Romania
| | - R. Mare
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Gastroenterology and Hepatology, Timisoara, Romania
| | - R. Sirli
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Gastroenterology and Hepatology, Timisoara, Romania
| | - A. Albai
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Diabetes and Metabolic Diseases, Timisoara, Romania
| | - O. Albai
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Diabetes and Metabolic Diseases, Timisoara, Romania
| | - L. Diaconu
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Diabetes and Metabolic Diseases, Timisoara, Romania
| | - T. Sorescu
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Diabetes and Metabolic Diseases, Timisoara, Romania
| | - S. Popescu
- “Victor Babes” University of Medicine and Pharmacy, Dept. of Diabetes and Metabolic Diseases, Timisoara, Romania
| | - L. Sima
- “Victor Babes” University of Medicine and Pharmacy, Dept. of General Surgery, Timisoara, Romania
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M. Bratu M, Birghila S, Popescu A, S. Negreanu-Pirjol B, Negreanu-Pirjol T. Correlation of antioxidant activity of dried berry infusions with the polyphenols and selected microelements contents. B CHEM SOC ETHIOPIA 2018. [DOI: 10.4314/bcse.v32i1.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Balint E, Lastofka D, Popescu A, Soare T, Manolescu N. Cytomorphological Aspects of Plasma Cell Tumours in Dogs. J Comp Pathol 2017. [DOI: 10.1016/j.jcpa.2016.11.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Moga T, Popescu A, Ivascu S, Cornianu M, Sporea I. Hepatic Epiteloid Hemangioendothelioma, a Diagnosis to keep in mind when finding Incidentalomas. Ultrasound Int Open 2016; 2:E68-70. [DOI: 10.1055/s-0042-106652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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16
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Parekh K, Markl M, Rose M, Schnell S, Popescu A, Rigsby CK. 4D flow MR imaging of the portal venous system: a feasibility study in children. Eur Radiol 2016; 27:832-840. [PMID: 27193778 DOI: 10.1007/s00330-016-4396-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 03/28/2016] [Accepted: 05/02/2016] [Indexed: 12/26/2022]
Abstract
OBJECTIVES To determine the feasibility of 4D flow MRI for visualization and quantification of the portal venous haemodynamics in children and young adults. METHODS 4D flow was performed in 28 paediatric patients (median age, 8.5 years; interquartile range, 5.2-16.5), 15 with non-operated native portal system and 13 with surgically created portal shunt. Image quality assessment for 3D flow visualization and flow pattern analyses was performed. Regional 4D flow peak velocity and net flow were compared with 2D-cine phase contrast MRI (2D-PC MR) in the post-surgical patients. RESULTS Mean 3D flow visualization quality score was excellent (mean ± SD, 4.2 ± 0.9) with good inter-rater agreement (κ,0.67). Image quality in children aged >10 years was better than children ≤10 years (p < 0.05). Flow pattern was defined for portal, superior mesenteric, splenic veins and splenic artery in all patients. 4D flow and 2D-PC MR peak velocity and net flow were similar with good correlation (peak velocity: 4D flow 22.2 ± 9.1 cm/s and 2D-PC MR 25.2 ± 11.2 cm/s, p = 0.46; r = 0.92, p < 0.0001; net flow: 4D flow 9.5 ± 7.4 ml/s and 2D-PC MR 10.1 ± 7.3 ml/s, p = 0.65; r = 0.81, p = 0.0007). CONCLUSIONS 4D flow MRI is feasible and holds promise for the comprehensive 3D visualization and quantification of portal venous flow dynamics in children and young adults. KEY POINTS • 4D flow MRI is feasible in children and young adults. • 4D flow MRI has the ability to non-invasively characterize portal haemodynamics. • Image quality of 4D flow MRI is better is older children. • 4D flow MRI can accurately quantify portal flow compared to 2D-cine PC MRI.
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Affiliation(s)
- Keyur Parekh
- Department of Medical Imaging, Ann and Robert H. Lurie Children's Hospital of Chicago, 225 E. Chicago Ave., Chicago, IL, 60611, USA. .,Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
| | - Michael Markl
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.,Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Chicago, IL, USA
| | - Michael Rose
- Department of Medical Imaging, Ann and Robert H. Lurie Children's Hospital of Chicago, 225 E. Chicago Ave., Chicago, IL, 60611, USA.,Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Susanne Schnell
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Andrada Popescu
- Department of Medical Imaging, Ann and Robert H. Lurie Children's Hospital of Chicago, 225 E. Chicago Ave., Chicago, IL, 60611, USA.,Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Cynthia K Rigsby
- Department of Medical Imaging, Ann and Robert H. Lurie Children's Hospital of Chicago, 225 E. Chicago Ave., Chicago, IL, 60611, USA.,Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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Bredicean C, Giurgi-Oncu C, Papava I, Romosan R, Jurma A, Cristanovici M, Hurmuz M, Popescu A. Defence mechanisms and coping skills in oncology patients. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
IntroductionOncology-related illnesses have become quite frequent in our lives. Lately, medical progress in the field of oncology has led to an increase in the survival rates of people diagnosed with cancer. The minimisation of disturbances in the lives of these people is done by each on their own, by using defence mechanisms and coping skills.ObjectivesTo identify the coping and defence mechanisms of subjects diagnosed with cancer compared with non-clinical subjects.AimsTo increase quality of life of subjects diagnosed with cancer through psychotherapy interventions.MethodNineteen subjects diagnosed with cancer who were receiving chemotherapy were recruited to the study. For comparison, a control group of non-clinical participants were also recruited. Participants were included into the study according to particular inclusion/exclusion criteria. The evaluation was conducted during 2014 and consisted of the analysis of the following parameters: socio-demographic data, clinical data, defence mechanisms (DSQ-60) and coping mechanisms (COPE scale).ResultsThe group of subjects diagnosed with cancer demonstrated the presence of defence mechanisms of the following type: passive aggressiveness, projection and coping mechanisms that were characterised by an emphasis on social support. The control group had defence mechanisms of the following types: repression, denial and coping mechanisms that focused on emotions.ConclusionsThere are differences in defence and coping mechanisms between subjects with cancer compared to the non-clinical group. It may be that defence and coping mechanisms can be optimized through psychotherapy interventions to increase quality of life.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Patel A, Popescu A, Robinson JD. Multi-Detector CTA of Anomalous Right Coronary Artery From Pulmonary Artery in a Five-Month-Old. World J Pediatr Congenit Heart Surg 2015; 6:672-3. [PMID: 26467887 DOI: 10.1177/2150135115593780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Angira Patel
- Department of Pediatrics, Division of Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA Department of Medical Imaging, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - Andrada Popescu
- Department of Medical Imaging, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - Joshua D Robinson
- Department of Pediatrics, Division of Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
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Febbo JA, Galizia MS, Murphy IG, Popescu A, Bi X, Turin A, Collins J, Markl M, Edelman RR, Carr JC. Congenital heart disease in adults: Quantitative and qualitative evaluation of IR FLASH and IR SSFP MRA techniques using a blood pool contrast agent in the steady state and comparison to first pass MRA. Eur J Radiol 2015; 84:1921-9. [PMID: 26253499 DOI: 10.1016/j.ejrad.2015.06.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 06/16/2015] [Accepted: 06/29/2015] [Indexed: 12/27/2022]
Abstract
OBJECTIVES To evaluate magnetic resonance angiography sequences during the contrast steady-state (SS-MRA) using inversion recovery (IR) with fast low-angle shot (IR-FLASH) or steady-state free precession (IR-SSFP) read-outs, following the injection of a blood-pool contrast agent, and compare them to first-pass MR angiography (FP-MRA) in adults with congenital heart disease (CHD). MATERIALS AND METHODS Twenty-three adult patients with CHD who underwent both SS-MRA and FP-MRA using a 1.5-T scanner were retrospectively identified. Signal-to-noise and contrast-to-noise ratios were obtained at eight locations within the aorta and pulmonary vessels.. Image quality and the presence of artifacts were subjectively assessed by two radiologists. The presence of pathology was noted and given a confidence score. RESULTS There was no difference in vessel dimensions among the sequences. IR-SSFP showed better image quality and fewer artifacts than IR-FLASH and FP-MRA. Confidence scores were significantly higher for SS-MRA compared to FP-MRA. Seven cases (30.4%) had findings detected at SS-MRA that were not detected at FP-MRA, and 2 cases (8.7%) had findings detected by IR-SSFP only. CONCLUSION SS-MRA of the thoracic vasculature using a blood pool contrast agent offers superior image quality and reveals more abnormalities compared to standard FP-MRA in adults with CHD, and it is best achieved with an IR-SSFP sequence. These sequences could lead to increased detection rates of abnormalities and provide a simpler protocol image acquisition.
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Affiliation(s)
- Jennifer A Febbo
- Department of Radiology, Northwestern University-Feinberg School of Medicine, Chicago, IL, USA.
| | - Mauricio S Galizia
- Department of Radiology, Northwestern University-Feinberg School of Medicine, Chicago, IL, USA; Imaging Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Ian G Murphy
- Department of Radiology, Northwestern University-Feinberg School of Medicine, Chicago, IL, USA
| | - Andrada Popescu
- Department of Medical Imaging, Children's Memorial Hospital, Chicago, IL, USA
| | - Xiaoming Bi
- Cardiovascular MR R&D, Siemens Healthcare, Chicago, IL, USA
| | - Alexander Turin
- Department of Radiology, Northwestern University-Feinberg School of Medicine, Chicago, IL, USA
| | - Jeremy Collins
- Department of Radiology, Northwestern University-Feinberg School of Medicine, Chicago, IL, USA
| | - Michael Markl
- Department of Radiology, Northwestern University-Feinberg School of Medicine, Chicago, IL, USA; Department of Biomedical Engineering, Northwestern University, Chicago, IL, USA
| | - Robert R Edelman
- Department of Radiology, North Shore University Health System, Evanston, IL, USA
| | - James C Carr
- Department of Radiology, Northwestern University-Feinberg School of Medicine, Chicago, IL, USA
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Ferreira M, Robalo M, Saraiva T, Cunha M, Goncalves L, Albuquerque A, Ramos D, Costa G, Lima J, Pego M, Peovska I, Davceva Pavlovska J, Pop Gorceva D, Zdravkovska M, Vavlukis M, Kostova N, Bulugahapitiya DS, Feben A, Avison M, Foley J, Martin J, De Graaf MA, Van Den Hoogen I, Leen A, Kharagjitsingh A, Kroft L, Jukema J, Bax J, Scholte A, Patel K, Mahan M, Ananthasubramaniam K, Durmus Altun G, Alpay M, Altun A, Andreini D, Pontone G, Mushtaq S, Bertella E, Conte E, Segurini C, Volpato V, Petulla M, Baggiano A, Pepi M, Van Dijk J, Huizing E, Jager P, Slump C, Ottervanger J, Van Dalen J, Yambao E, Calleja H, Sibulo A, Ramirez Moreno A, Siles Rubio J, Noureddine M, Munoz-Bellido J, Bravo R, Martinez F, Valle A, Milan A, Inigo-Garcia L, Velasco T, Ramaiah VL, Devanbu JS, Taywade SK, Hejjaji VS, Zafrir N, Bental T, Gutstein A, Solodky A, Mats I, Kornowski R, Lagan J, Hasleton J, Meah M, Mcshane J, Trent R, Massalha S, Israel O, Koskosi A, Kopelovich M, Marai I, Venuraju S, Jeevarethinam A, Dumo A, Ruano S, Darko D, Cohen M, Nair D, Rosenthal M, Rakhit R, Lahiri A, Pizzi MN, Roque A, Fernandez-Hidalgo N, Cuellar-Calabria H, Gonzalez-Alujas M, Oristrell G, Rodriguez-Palomares J, Tornos P, Aguade-Bruix S, Smettei O, Abazid R, Ahmed WMK, Samy W, Behairy N, Tayeh O, Hassan A, Berezin A, Kremzer A, Samura T, Berezina T, Scrima G, Bertuccio G, Canseco Nadia N, Cruz Raul C, Gonzalez Cristian G, Hernandez Salvador S, Alexanderson Erick E, Zerahn B, Shugushev Z, Maximkin D, Chepurnoy A, Volkova O, Tsedenova A, Faibushevich A, Baranovich V, Yoshida H, Mizukami A, Matsumura A, Keller M, Silber S, Falcao A, Imada R, Azouri L, Giorgi M, Santos R, Mello S, Kalil Filho R, Meneghetti J, Chalela W, Kanni L, Ohrman T, Nygren AT, Irabi R, Falcao A, Imada R, Azouri L, Parisotto T, Soares J, Kalil Filho R, Meneghetti J, Chalela W, Burrell S, Burrell S, Lo C, Zavadovskyi K, Gulya M, Lishmanov Y, Amin A, Kandeel A, Shaban M, Nawito Z, Caobelli F, Soffientini A, Thackeray J, Bengel F, Pizzocaro C, Guerra U, Hellberg S, Silvola J, Kiugel M, Liljenback H, Savisto N, Thiele A, Laine V, Knuuti J, Roivainen A, Saraste A, Ismail B, Hadizad T, Dekemp R, Beanlands R, Dasilva JN, Hyafil F, Sorbets E, Duchatelle V, Rouzet F, Le Guludec D, Feldman L, Martire V, De Pierris C, Martire M, Pis Diez E, Ramaiah V, Devanbu JS, Hejjaji VS, Lebasnier A, Legallois D, Peyronnet D, Desmonts C, Zalcman G, Bienvenu B, Agostini D, Manrique A, Solomyanyy V, Mintale I, Zabunova M, Narbute I, Ratniece M, Jakobsons E, Kaire K, Kamzola G, Briede I, Jegere S, Erglis A, Mostafa S, Abdelkader M, Abdelkader H, Abdelkhlek S, Khairy E, Huidu S, Popescu A, Lacau S, Huidu A, Dimulescu D, Abazid R, Smettei O, Sayed S, Al Harby F, Habeeb A, Saqqah H, Merganiab S, Selvanayagam J, Harms H, Tolbod L, Hansson N, Kero T, Orndahl L, Kim W, Bouchelouche K, Wiggers H, Frokiaer J, Sorensen J, Hansson N, Tolbod L, Harms H, Wiggers H, Kim W, Hansen E, Zaremba T, Frokiaer J, Sorensen J, Harms H, Tolbod L, Hansson N, Kero T, Orndahl L, Kim W, Bouchelouche K, Wiggers H, Frokiaer J, Sorensen J. Poster Session 3: Tuesday 5 May 2015, 08:30-12:30 * Room: Poster Area. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
Tunable PhCs were fabricated by inclusion of VO2particles in high aspect ration MIR microtube arrays.
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Affiliation(s)
| | - C. Kraeh
- Walter Schottky Institut
- Technische Universität München
- Garching
- Germany
| | - A. Popescu
- Siemens AG, Corporate Technology
- München
- Germany
| | - H. Hedler
- Siemens AG, Corporate Technology
- München
- Germany
| | - J. J. Finley
- Walter Schottky Institut
- Technische Universität München
- Garching
- Germany
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Sporea I, Badea R, Popescu A, Spârchez Z, Sirli RL, Dănilă M, Săndulescu L, Bota S, Calescu DP, Nedelcu D, Brisc C, Ciobâca L, Gheorghe L, Socaciu M, Martie A, Ioaniţescu S, Tamas A, Streba CT, Iordache M, Simionov I, Jinga M, Anghel A, Cijevschi Prelipcean C, Mihai C, Stanciu SM, Stoicescu D, Dumitru E, Pietrareanu C, Bartos D, Manzat Saplacan R, Pârvulescu I, Vădan R, Smira G, Tuţă L, Săftoiu A. Contrast-enhanced ultrasound (CEUS) for the evaluation of focal liver lesions - a prospective multicenter study of its usefulness in clinical practice. Ultraschall Med 2014; 35:259-66. [PMID: 24563420 DOI: 10.1055/s-0033-1355728] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
PURPOSE To assess the value of contrast-enhanced ultrasound (CEUS) for differentiating malignant from benign focal liver lesions (FLLs) and for diagnosing different FLL types. MATERIAL AND METHODS CEUS performed in 14 Romanian centers was prospectively collected between February 2011 and June 2012. The inclusion criteria were: age > 18 years; patients diagnosed with 1 - 3 de novo FLLs on B-mode ultrasound; reference method (computed tomography (CT), magnetic resonance imaging (MRI) or biopsy) available; patient's informed consent. FLL lesions were characterized during CEUS according to the European Federation of Societies for Ultrasound in Medicine and Biology guidelines. For statistical analysis, indeterminate FLLs at CEUS were rated as false classifications. RESULTS A total number of 536 cases were included in the final analysis, 344 malignant lesions (64.2 %) and 192 benign lesions (35.8 %). The reference method was: CT/MRI - 379 cases (70.7 %), pathological exam - 150 cases (27.9 %) and aspiration of liver abscesses - 7 cases (1.4 %). CEUS was conclusive in 89.3 % and inconclusive in 10.7 % of cases. To differentiate between malignant and benign FLLs, CEUS had 85.7 % sensitivity, 85.9 % specificity, 91.6 % positive predictive value, 77.1 % negative predictive value and 85.8 % accuracy. The CEUS accuracy for differentiation between malignant and benign liver lesions was similar in tumors with diameter ≤ 2 cm and those with diameter > 2 cm. CONCLUSION CEUS represents a useful method in clinical practice for differentiating between malignant and benign FLLs detected on standard ultrasonography, and the results of this study are in concordance with previous multicenter studies: DEGUM (Germany) and STIC (France).
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Affiliation(s)
- I Sporea
- Department of Gastroenterology and Hepatology, University of Medicine and Pharmacy "Victor Babeş" Timişoara, Romania
| | - R Badea
- Regional Institute of Gastroenterology and Hepatology "Prof. Dr. Octavian Fodor", University of Medicine and Pharmacy "Iuliu Hatieganu" Cluj Napoca, Romania
| | - A Popescu
- Department of Gastroenterology and Hepatology, University of Medicine and Pharmacy "Victor Babeş" Timişoara, Romania
| | - Z Spârchez
- Regional Institute of Gastroenterology and Hepatology "Prof. Dr. Octavian Fodor", University of Medicine and Pharmacy "Iuliu Hatieganu" Cluj Napoca, Romania
| | - R L Sirli
- Department of Gastroenterology and Hepatology, University of Medicine and Pharmacy "Victor Babeş" Timişoara, Romania
| | - M Dănilă
- Department of Gastroenterology and Hepatology, University of Medicine and Pharmacy "Victor Babeş" Timişoara, Romania
| | - L Săndulescu
- Research Center of Gastroenterology and Hepatology, University of Medicine and Pharmacy, Craiova, Romania
| | - S Bota
- Department of Gastroenterology and Hepatology, University of Medicine and Pharmacy "Victor Babeş" Timişoara, Romania
| | - D P Calescu
- Department of Gastroenterology, Emergency Hospital Floreasca, Bucharest, Romania
| | - D Nedelcu
- Delta Promedical Hospital, Bucharest, Romania
| | - C Brisc
- Department of Gastroenterology, University of Oradea, Romania
| | - L Ciobâca
- 1st Medical Department, Central Military Emergency University Hospital "Dr. Carol Davila", Bucharest, Romania
| | - L Gheorghe
- IIIrd Department of Gastroenterology and Hepatology, Clinical Institute Fundeni, Bucharest, Romania
| | - M Socaciu
- Regional Institute of Gastroenterology and Hepatology "Prof. Dr. Octavian Fodor", University of Medicine and Pharmacy "Iuliu Hatieganu" Cluj Napoca, Romania
| | - A Martie
- Department of Gastroenterology and Hepatology, University of Medicine and Pharmacy "Victor Babeş" Timişoara, Romania
| | - S Ioaniţescu
- Center of Internal Medicine, Fundeni Clinical Institute, Bucharest, Romania
| | - A Tamas
- Department of Anatomy and Embriology, University of Medicine and Pharmacy "Iuliu Hatieganu" Cluj Napoca, Romania
| | - C T Streba
- Research Center of Gastroenterology and Hepatology, University of Medicine and Pharmacy, Craiova, Romania
| | - M Iordache
- 1st Medical Department, Central Military Emergency University Hospital "Dr. Carol Davila", Bucharest, Romania
| | - I Simionov
- IIIrd Department of Gastroenterology and Hepatology, Clinical Institute Fundeni, Bucharest, Romania
| | - M Jinga
- 1st Medical Department, Central Military Emergency University Hospital "Dr. Carol Davila", Bucharest, Romania
| | - A Anghel
- 1st Medical Department, Central Military Emergency University Hospital "Dr. Carol Davila", Bucharest, Romania
| | - C Cijevschi Prelipcean
- Institute of Gastroenterology and Hepatology, "Grigore T. Popa" University of Medicine and Pharmacy Iaşi, Romania
| | - C Mihai
- Institute of Gastroenterology and Hepatology, "Grigore T. Popa" University of Medicine and Pharmacy Iaşi, Romania
| | - S M Stanciu
- 1st Medical Department, Central Military Emergency University Hospital "Dr. Carol Davila", Bucharest, Romania
| | - D Stoicescu
- 1st Medical Department, Central Military Emergency University Hospital "Dr. Carol Davila", Bucharest, Romania
| | - E Dumitru
- Department of Gastroenterology, University of Constanta, Romania
| | - C Pietrareanu
- IIIrd Department of Gastroenterology and Hepatology, Clinical Institute Fundeni, Bucharest, Romania
| | - D Bartos
- Department of Internal Medicine and Gastroenterology, Emergency Hospital Floreasca, Bucharest, Romania
| | - R Manzat Saplacan
- Ist, Medical Clinic, University of Medicine and Pharmacy "Iuliu Hatieganu" Cluj-Napoca, Cluj Napoca, Romania
| | - I Pârvulescu
- IIIrd Department of Gastroenterology and Hepatology, Clinical Institute Fundeni, Bucharest, Romania
| | - R Vădan
- IIIrd Department of Gastroenterology and Hepatology, Clinical Institute Fundeni, Bucharest, Romania
| | - G Smira
- IIIrd Department of Gastroenterology and Hepatology, Clinical Institute Fundeni, Bucharest, Romania
| | - L Tuţă
- Department of Gastroenterology, University of Constanta, Romania
| | - A Săftoiu
- Research Center of Gastroenterology and Hepatology, University of Medicine and Pharmacy, Craiova, Romania
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Bredicean C, Papava I, Romosan R, Giurgi-Oncu C, Popovici Z, Popescu A. EPA-0307 – Bipolar disorder: the connection between neurocognition and the ability to recognize emotion. Eur Psychiatry 2014. [DOI: 10.1016/s0924-9338(14)77747-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Thakrar D, Popescu A, Gupta S, de Freitas A, Russell H, Carr J, Markl M. Complex 3D blood flow pathways in two cases of aorta to right heart fistulae: a 4D flow MRI study. Magn Reson Imaging 2013; 31:1453-5. [PMID: 24021226 DOI: 10.1016/j.mri.2013.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Accepted: 02/27/2013] [Indexed: 11/18/2022]
Abstract
We present an analysis of 3D blood flow in two cases of Sinus of Valsalva to right heart fistulae based on 4D flow MRI. Despite similar underlying pathology, 3D visualization revealed intricate differences in flow patterns connecting the systemic and pulmonary circulation. The cases illustrates the potential of 4D flow MRI to complement the evaluation of complex structural heart disease by assessing complex flow dynamics and providing quantitative information of flow ratios and flow rates.
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Affiliation(s)
- Darshit Thakrar
- Department of Radiology, Northwestern University, Chicago, IL, USA
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Sporea I, Popescu A, Diculescu M, Stoica V, Constantinescu G, Prelipcean CC, Seicean A, Pascu O, Jinga M, Tudor N, Voiosu R, Dobru D, Săftoiu A, Vălean S, Miuţescu E, Bancu L, Băţagă S, Dumitraşcu D, Brisc C, Frăţilă O, Raţiu I, Pienar L, Şirli R, Miuţescu B. Technical performance of colonoscopy -- multicenter study in university and non-university centers of Romania. Chirurgia (Bucur) 2013; 108:86-90. [PMID: 23464775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/01/2013] [Indexed: 06/01/2023]
Abstract
UNLABELLED The aim of the paper was to evaluate the national availability of colonoscopy and the quality parameters of this procedure in our country. MATERIAL AND METHOD During a 6 months period (01.07- 31.12.2009), we performed a prospective multicenter study in which 76 centers were invited to respond to a questionnaire regarding colonoscopy, 39 centers agreeing to participate. We assessed: the number of colonoscopies, the number of total colonoscopies and the causes of incomplete colonoscopies. RESULTS During the study period, 16,083 colonoscopies were performed, 12,294 (76.4%) of them total colonoscopies. In 1,191 cases, stenosis was the cause of incomplete colonoscopy. If we consider this an objective reason for an incomplete colonoscopy, there were 12,294 total colonoscopies (82.4%). Comparing university centers with non-university ones, the proportion of total colonoscopies was 10,400/12,475 (83.4%) vs. 1,894/2,417 (78.4%) (p less then 0.0001). However, comparing the present study with previous ones, performed in 2003 and 2007, the proportion of total colonoscopies increased from 70.5% to 76.9% and 82.4% respectively (2003 vs. 2007 p less then 0.0001; 2007 vs. 2009 p less then 0.0001), while the quality difference between university and non-university hospitals persisted. CONCLUSIONS the quality of colonoscopy in Romania increased in the last 5 years, while the quality difference between university and non-university hospitals persisted.
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Affiliation(s)
- I Sporea
- Department of Gastroenterology and Hepatology, University of Medicine and Pharmacy Timişoara, Romania.
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Popescu A, Cristescu C, Veliscu A, Ranga M, Marinescu B. M091 HORMONE REPLACEMENT THERAPY AND POSITIVE IMPACT ON QUALITY OF LIFE FOR WOMEN IN MENOPAUSE, EVALUATION 1 YEAR OF TREATMENT. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)61286-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Cristescu C, Veliscu A, Marinescu B, Popescu A, Neagu M. M072 ENDOMETRIOSIS - CLINICAL STUDY. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)61267-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Schonberger M, Usman A, Galizia M, Popescu A, Collins J, Carr JC. Time-resolved MR venography of the pulmonary veins precatheter-based ablation for atrial fibrillation. J Magn Reson Imaging 2012; 37:127-37. [PMID: 22996419 DOI: 10.1002/jmri.23808] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Accepted: 08/07/2012] [Indexed: 11/08/2022] Open
Abstract
PURPOSE To evaluate time-resolved magnetic resonance angiography (TR-MRA) of the pulmonary venous circulation using the time-resolved angiography with interleaved stochastic trajectories (TWIST) method and compare it with the more commonly used conventional contrast-enhanced magnetic resonance angiography (CE-MRA) approach in atrial fibrillation patients referred for preablation pulmonary vein mapping. MATERIALS AND METHODS This study was approved by the Institutional Review Board. Twenty-six patients (15 males; age 59.6 ± 12.7 years) referred for preablation pulmonary vein mapping underwent both conventional CE-MRA and TR-MRA with TWIST. Imaging was performed on a 1.5 T (Magnetom Avanto, Siemens Healthcare, Erlangen, Germany) MRI scanner. Source partition and maximum intensity projection (MIP) images were evaluated retrospectively. For quantitative analysis, pulmonary vein ostium orthogonal dimensions were measured using double oblique multiplanar reformatting. The results were analyzed using paired t-tests, Lin's concordance correlation coefficient, and Bland-Altman plots. For qualitative analysis, both source partition images and MIP images were assessed by two observers (A.P. and M.G.). The presence of common ostiums or accessory veins was recorded and analyzed using unweighted Cohen's kappa. Pulmonary vein conspicuity was scored on a scale of 1-4 (1 = poor, 2 = fair, 3 = good, 4 = excellent) and analyzed using paired t-tests, intraclass correlation coefficients, and quadratic weighted kappa statistics. RESULTS Orthogonal venous diameters were comparable for both TR-MRA and conventional CE-MRA (1.34 ± 0.37 vs. 1.38 cm ± 0.36, respectively). Results of paired t-tests, Lin's concordance correlation coefficient, and Bland-Altman analysis revealed relatively close comparison between methods. The magnitude of the mean difference for any of the statistical comparisons did not exceed 0.10 cm. The visualization of variant pulmonary vein anatomy was very similar for both techniques. Agreement between techniques was determined to be "good" to "very good" (κ = 0.78-0.85). Conspicuity scores for each pulmonary vein were also very close. Paired t-tests, intraclass correlation coefficients, and quadratic weighted kappa statistics all revealed strong agreement between methods. CONCLUSION TR-MRA using TWIST produces comparable anatomic images and pulmonary venous dimensions to the more widely used CE-MRA technique. Additionally, the TWIST technique improves arterio-venous separation, does not need exact bolus timing, requires less gadolinium, and gives additional information on vein perfusion.
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Affiliation(s)
- Michael Schonberger
- Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, USA.
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Vere CC, Rogoveanu I, Streba CT, Popescu A, Ciocalteu A, Ciurea T. The role of capsule endoscopy in the detection of small bowel disease. Chirurgia (Bucur) 2012; 107:352-60. [PMID: 22844834 DOI: pmid/22844834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Videocapsule endoscopy (VCE) can identify lesions in the small bowel which would otherwise be hard to detect. We have selected 53 patients with digestive symptoms in which upper and lower endoscopy had provided no findings. Patients were classified into three groups, based on their main indication for VCE exploration: group one--obscure gastrointestinal bleeding (OGIB); group two--unspecific abdominal symptoms; group 3--monitoring of a prior known pathology. We found that VCE has high predictive values, sensibility and specificity in the diagnosis of OGIB. VCE was also useful in the detection and extent evaluation of lesions in Crohn's and celiac disease. VCE is also able to detect tumors of the small bowel with sufficient accuracy, and can be used to monitor patients with hereditary pre-malignant diseases such as FAP. There were few light adverse effects and no major complications. We conclude that VCE is a safe and effective procedure for the detection of small bowel lesions.
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Affiliation(s)
- C C Vere
- Research Center of Gastroenterology and Hepatology, University of Medicine and Pharmacy of Craiova, Craiova, Dolj, Romania
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Popescu A, Callaway C, Guyette F, Rittenberger J. Timing and Dynamic Progression of EEG Patterns in Comatose Post-Cardiac Arrest Subjects Treated with Hypothermia (S47.005). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.s47.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Popescu A, Dixit R, Bagic A, Ghearing G, Hendrickson R. Psychopathology of Patients with Psychogenic Nonepileptic Spells (PNES) Referred for Video-EEG Monitoring (P01.041). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p01.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Dixit R, Popescu A, Bagic A, Ghearing G, Hendrickson R. Episodic Medical Problems and Medical Illnesses with a Psychological Component in Patients with Psychogenic Nonepileptic Spells (PNES) Referred for Video-EEG Monitoring (P01.040). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p01.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Aller S, Popescu A, Rao S, Morgan E, Gosiengfiao Y. Transient partial response to sorafenib treatment in an adolescent patient with MEN2B syndrome and end-stage medullary thyroid carcinoma. Pediatr Blood Cancer 2012; 58:98-100. [PMID: 21721105 DOI: 10.1002/pbc.23032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Accepted: 12/17/2010] [Indexed: 11/09/2022]
Abstract
Metastatic medullary thyroid carcinoma (MTC) is an aggressive malignancy with an extremely poor prognosis. Currently no effective conventional systemic therapies exist to treat pediatric MTC. We describe an adolescent female with newly diagnosed MEN2B syndrome who presented with advanced stage metastatic MTC and demonstrated a partial transient response to sorafenib monotherapy. This clinical result supports further research into the use of sorafenib in the treatment of pediatric MTC.
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Affiliation(s)
- Steven Aller
- Department of Pediatrics, Division of Hematology, Oncology, and Stem Cell Transplant, Children's Memorial Hospital, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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Borges P, Rocha J, Popescu A, Mil-Homens D, Sá-Correia I, Fialho A, Frazao C. Hydrolysis of the thioester intermediate in UDP-glucose dehydrogenases. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311080408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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36
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Sporea I, Vlad M, Bota S, Sirli RL, Popescu A, Danila M, Sendroiu M, Zosin I. Thyroid stiffness assessment by acoustic radiation force impulse elastography (ARFI). Ultraschall Med 2011; 32:281-285. [PMID: 21321841 DOI: 10.1055/s-0029-1246048] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
PURPOSE To evaluate and compare the values of thyroid tissue elasticity in subjects without known thyroid pathology, in patients with Graves' disease and with chronic autoimmune thyroiditis (CAT). PATIENTS AND METHODS We performed a prospective study that included 74 subjects, 23 without thyroid pathology, 29 with Graves' disease and 22 with CAT (diagnosed by specific tests). In all patients, 10 elastographic measurements were performed in the right thyroid lobe (RTL) and 10 in the left thyroid lobe (LTL) using a 2-6 MHz convex probe. Median values were calculated for each thyroid lobe, measured in meters/second (m/sec). We calculated a mean ARFI value from measurements made in the RTL and LTL. RESULTS Thyroid stiffness was statistically significant lower in normal subjects vs. those with Graves' disease (2.07±0.44 m/sec vs. 2.82±0.47 m/sec, p<0.001) and with CAT (2.07±0.44 m/sec vs. 2.49±0.48 m/sec, p=0.004). We also found a statistically significant difference between subjects without thyroid pathology and those with autoimmune thyroid pathology (Graves' disease and CAT) (2.07±0.44 m/sec vs. 2.68±0.50 m/sec, p<0.001). CONCLUSION ARFI seems to be a useful method for the evaluation of diffuse thyroid gland pathology and is able to predict with sufficient accuracy the presence of thyroid diffuse diseases (AUROC=0.80).
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Affiliation(s)
- I Sporea
- Gastroenterology, University of Medicine and Pharmacy Timisoara, Timisoara, Romania.
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Schonberger M, Kino A, Popescu A, Galizia M, Collins J, Carroll T, Carr J. Time-resolved mr venography pre catheter-based ablation for atrial fibrillation. J Cardiovasc Magn Reson 2011. [PMCID: PMC3106927 DOI: 10.1186/1532-429x-13-s1-p234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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38
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Sporea I, Sirli RL, Deleanu A, Iulia R, Tudora A, Dan I, Popescu A. What did we learn from the first 3,459 cases of liver stiffness measurement by transient elastography (FibroScan®)? Ultraschall Med 2011; 32:40-45. [PMID: 20603784 DOI: 10.1055/s-0029-1245525] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
PURPOSE Chronic viral hepatopathies can be evaluated through invasive or noninvasive methods. The aim of this paper was to assess the indications and results of transient elastographic (TE) evaluation of the liver in patients with chronic viral hepatitis and cirrhosis. MATERIALS AND METHODS We retrospectively assessed all the liver stiffness measurements (LSM) (FibroScan®) performed over a two-year period (2007 - 2009). RESULTS 3,459 TE evaluations were made mainly for the assessment of: HCV hepatitis, HBV infection (chronic hepatitis and inactive HBV carriers), biviral hepatitis (B + C or B + D), cirrhosis and in 176 normal subjects (to establish the normal values of LSM). From the 3,459 FS evaluations, we could not obtain valid LSM in 183 cases (5.3 %). 93.9 % of the patients in the failure group were overweight (BMI > 25 kg/m²). In 527 cases (16 %) the SR (success rate = number of valid measurements/total number of measurements) was < 60 %. TE reproducibility was analyzed in 287 cases. The ICCs for the three operators were 0.985, 0.949, and 0.874 respectively, and the overall ICC was 0.982. 596 cases of cirrhosis were evaluated. A cut-off value of 23.3kPa was found to predict the presence of at least grade 2 esophageal varices. CONCLUSION LSM by means of TE is a promising noninvasive evaluation method, which can be used in numerous clinical situations, some in which its value is well established (suspicion of LC, predicting significant fibrosis) and some in which its value is less known (HBV chronic hepatitis, inactive HBV carriers or severity of portal hypertension).
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Affiliation(s)
- I Sporea
- Gastroenterology, University of Medicine and Pharmacy Timisoara, Romania
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Sporea I, Sirli RL, Deleanu A, Popescu A, Focsa M, Danila M, Tudora A. Acoustic radiation force impulse elastography as compared to transient elastography and liver biopsy in patients with chronic hepatopathies. Ultraschall Med 2011; 32 Suppl 1:S46-S52. [PMID: 20603783 DOI: 10.1055/s-0029-1245360] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
PURPOSE To compare two methods of noninvasive assessment: transient elastography (TE) and acoustic radiation force impulse elastography (ARFI). PATIENTS AND METHODS Our study included 114 subjects: 38 healthy volunteers, (considered to have no fibrosis - F 0) and 76 patients with chronic liver disease: 53 who had undergone liver biopsy (LB) (7 with F 1, 24 with F 2, 22 with F 3 Metavir) and 23 previously diagnosed with cirrhosis (F4 Metavir). In each patient we performed a liver stiffness measurement by means of TE and ARFI. ARFI (shear wave velocity quantification) was performed at 3 points: at 0 - 1 cm, at 1 - 2 cm and at 2 - 3 cm under the capsule. For each depth, 5 valid measurements were made, and a median value was calculated, measured in m/sec. RESULTS A direct, strong, linear correlation (Spearman rho = 0.848) was found between TE and the stage of fibrosis (p < 0.001). A significant, direct correlation was found between ARFI measurements made 1 - 2 cm and 2 - 3 cm below the liver capsule and the severity of fibrosis (rho = 0.675 and 0.714 respectively). The subcapsularly measured ARFI values showed a poor correlation with fibrosis (rho = 0.469). The best test for predicting significant fibrosis (F ≥ 2) was TE, with the area under receiver-operating characteristic curve (AUROC) 0.908, significantly larger than the AUROCs for ARFI. If only ARFI is considered, measurements made 1 - 2 and 2 - 3 cm below the capsule have the best predictive value, with AUROCs not significantly different from each other (0.767 and 0.731, respectively). For predicting fibrosis (F > 0), TE had the best predictive value: optimized cut-off 5.65 kPa (AUROC -0.898). For ARFI, the cut-offs were: 1.4 m/sec, AUROC -0.747 (1 - 2 cm), and 1.26 m/sec AUROC -0.721 (2 - 3 cm). For predicting cirrhosis (F = 4 Metavir), the optimized cut-offs were: TE -12.9 kPa (AUROC -0.994); ARFI - 1.78 m/sec for measurements made 2 - 3 cm below the capsule, AUROC - 0.951. CONCLUSION At present, liver elasticity evaluation by means of ARFI is not superior to TE for the assessment of liver fibrosis. For ARFI, the most reliable results are obtained if measurements are made 1 - 2 and 2 - 3 cm below the liver capsule. ARFI is an accurate test for the diagnosis of cirrhosis.
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MESH Headings
- Adult
- Biopsy
- Elasticity Imaging Techniques/methods
- Female
- Hepatitis B, Chronic/diagnostic imaging
- Hepatitis B, Chronic/pathology
- Hepatitis C, Chronic/diagnostic imaging
- Hepatitis C, Chronic/pathology
- Hepatitis, Alcoholic/diagnostic imaging
- Hepatitis, Alcoholic/pathology
- Hepatitis, Chronic/diagnostic imaging
- Hepatitis, Chronic/pathology
- Humans
- Liver/diagnostic imaging
- Liver/pathology
- Liver Cirrhosis/diagnostic imaging
- Liver Cirrhosis/pathology
- Liver Cirrhosis, Biliary/diagnostic imaging
- Liver Cirrhosis, Biliary/pathology
- Liver Function Tests
- Male
- Middle Aged
- Predictive Value of Tests
- ROC Curve
- Reference Values
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Affiliation(s)
- I Sporea
- Gastroenterology, University of Medicine and Pharmacy Timisoara, Timisoara, Romania.
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Abstract
A double wall carbon nanotube oscillator near an infinite surface with the nanotube axis perpendicular to the surface is investigated. The oscillatory motion is governed in part by the van der Waals forces in the system, and we use the Lennard-Jones approximation for their calculation. In addition, friction losses due to the proximity of the oscillating nanotube near the infinite surface are taken into account using a phenomenological model. Newton's equation is solved and the oscillatory motion is studied as a function of the nanotube-surface distance, the nanotube length, and the initial extrusion of the moving nanotube. A practical device for surface profiling is also proposed.
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Affiliation(s)
- A Popescu
- Department of Physics, University of South Florida, Tampa, FL 33620, USA
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Abstract
From the beginning of the neutron therapy program at the University of Washington Medical Center, the neutron dose distribution in tissue has been calculated using an in-house treatment planning system called PRISM. In order to increase the accuracy of the absorbed dose calculations, two main improvements were made to the PRISM treatment planning system: (a) the algorithm was changed by the addition of an analytical expression of the central axis wedge factor dependence with field size and depth developed at UWMC. Older versions of the treatment-planning algorithm used a constant central axis wedge factor; (b) a complete newly commissioned set of measured data was introduced in the latest version of PRISM. The new version of the PRISM algorithm allowed for the use of the wedge profiles measured at different depths instead of one wedge profile measured at one depth. The comparison of the absorbed dose calculations using the old and the improved algorithm showed discrepancies mainly due to the missing central axis wedge factor dependence with field size and depth and due to the absence of the wedge profiles at depths different from 10 cm. This study concludes that the previously reported prescribed doses for neutron therapy should be changed.
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Affiliation(s)
- A Popescu
- University of Washington Medical Center, Seattle, WA 98195-6043, USA.
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Vladescu A, Kiss A, Popescu A, Braic M, Balaceanu M, Braic V, Tudor I, Logofatu C, Negrila CC, Rapeanu R. Influence of bilayer period on the characteristics of nanometre-scale ZrN/TiAIN multilayers. J Nanosci Nanotechnol 2008; 8:717-721. [PMID: 18464396 DOI: 10.1166/jnn.2008.d218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In the last decade, considerable research effort was directed to the deposition of multilayer films with layer thicknesses in the nanometer range (superlattice coatings), in order to increase the performance of various cutting tools and machine parts. The goal of the present work was to investigate the main microstructural, mechanical and wear resistance characteristics of a superlattice coating, consisting of alternate multilayer ZrN/TiAIN films, with various bilayer periods (5 / 20 nm). The coatings were deposited by the cathodic arc method on Si, plain carbon steel and high speed steel substrates to be used as wear resistance surfaces. The multilayer structures were prepared by using shutters placed in front of each cathode (Zr and Ti+Al). The characteristics of multilayer structures (elemental and phase composition, texture, Vickers microhardness, thickness, adhesion, and wear resistance) were determined by using various techniques (AES, XPS, XRD, microhardness measurements, scratch, and tribological tests). A comparison with the properties of ZrN and TiAIN single-layer coatings was carried out.
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Affiliation(s)
- A Vladescu
- National Institute for Optoelectronics-Tehnoprof Research Centre, Bucharest 077125, Romania
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Mîndrilă I, Niculescu M, Mogoantă L, Guja GA, Mărginean OM, Căpitănescu B, Popescu A. Venous circulation of the bronchial wall. Rom J Morphol Embryol 2007; 48:391-394. [PMID: 18060189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Bronchial supply plays an important role in both the protecting mechanisms and the pathogenic ones of many chronic inflammatory, infections or ischemic diseases of the lung. However, little is known regarding the bronchial supply development; the appearance of the connections to the functional pulmonary supply; the territory supplied by the bronchial veins. In this study, we follow the distribution of the pulmonary veins branches at the level of the subcarinal airways and their relationship to the bronchial veins in the human lungs. For studying the venous supply of the airways, we used the corrosion and colored gelatin injection methods followed by microdissection by means of an operator microscope. Venous circulation of the intrapulmonary airways is mainly tributary to the pulmonary vein branches. Venous circulation of the extrapulmonary airways is tributary to both the pulmonary and the bronchial veins. Taking into account the difference of sizes, we consider that, under physiologic conditions, the main venous collector is represented by the pulmonary veins.
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Affiliation(s)
- I Mîndrilă
- Department of Anatomy, University of Medicine and Pharmacy of Craiova, Romania.
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Popescu I, Tomulescu V, Hrehoret D, Popescu A, Herlea V. Laparoscopic hand-assisted adrenalectomy for a 20 cm benign tumor. Chirurgia (Bucur) 2007; 102:75-8. [PMID: 17410734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Since its introduction in 1992, laparoscopic adrenalectomy (LA) has become the technique of choice in the surgical treatment of both secreting or non-secreting benign adrenal pathology. Although traditionally, laparoscopic approach was recommended only for tumor sizes less than 6-8 cm--as larger tumors were known to have an increased risk of malignancy--the currently growing experience and improvement of surgical techniques has allowed for an extension of the therapeutic indication, as shown by the recent case report of LA use for a benign 22 cm tumor (1). We report the case of a young patient operated in our Department for a benign 20 cm adrenal tumor for which laparoscopic "hand-assisted" adrenalectomy yielded a good postoperative outcome and minimal complications.
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Affiliation(s)
- I Popescu
- Centrul de Chirurgie Generala şi Transplant Hepatic, Institutul Clinic Fundeni
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Tudor C, Jeberean R, Buzas R, Popescu A, Ionita M. We-P11:1 Reducing the cardiovascular risk at patients with type 2 diabetes by controlling the risk factors. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)81357-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Tudor C, Jeberean R, Buzas R, Popescu A, Lungu V. We-P13:364 The prevalence of metabolic syndrome and cardiovascular events incidence related to its components. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)81717-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
We report four cases of flexor tendon ruptures which occurred after distal radial fracture and reviewed the 25 other cases reported in the literature since 1932. Analysis of these 29 cases disclosed the causes of these ruptures. A deformed callus after distal radial fracture or presence of an anterior osteosynthesis plate can under certain conditions lead to secondary flexor tendon tears. It was also found that tears of the flexor pollicis longus rupture predominate, followed by injury to the flexor digitorum profundis and superficialis of the index finger. Other tendons have only been involved in only a few cases. In order to avoid this complication, we propose systematic removal of anterior plates or secondary replacement if the reduction is not totally anatomic. Surgeons should recall the importance of anatomic reduction of distal radial fractures.
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Affiliation(s)
- J M Cognet
- Département de Chirurgie Orthopédique et Traumatologique, Hôpital de Hautepierre, Unité de Chirurgie du Membre Supérieur, Hôpitaux Universitaires de Strasbourg, avenue Molière, 67098 Strasbourg Cedex.
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Motoc A, Motoc M, Bolintineanu S, Muşuroi C, Popescu A, Niculescu M. Variation of cephalometric parameters in peri-puberty cephalometric aspects of sexual dymorphism. Rom J Morphol Embryol 2005; 45:73-81. [PMID: 15847381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The data regarding the global and segmental growth and development of the child are useful in pluri-disciplinary studies which view the human body as an entity where the biological aspects (both the normal and the pathological ones) interlace with the socio-cultural ones, thus offering the possibility to any specialist in the field of humanities and morphological studies to cover a wide range in contemporary anthropological research. The development of the skull takes place in two active stages separated by a stage of relative quiet during the age of seven and puberty when the skull has a dolicocephalic aspect. During the second stage of active growth (which starts with puberty) there is a transversal growth of the basis of the cranium followed by an anteroposterior growth. The degree of gender-related differences as far as the dimensions and proportions of the skull are concerned vary greatly according to race, therefore we may say that general ethnic differences are more pronounced than gender-related ones.
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Affiliation(s)
- A Motoc
- Department of Anatomy, University of Medicine and Pharmacy Victor Babeş, Timişoara
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Stoicescu IP, Ibraim E, Husar I, Popa C, Cocei H, Popescu A, Diţiu L. [National Program for Tuberculosis Control (PNCT): achievements, problems, priorities]. Pneumologia 2005; 54:49-54. [PMID: 16536000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
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